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README.md

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features

  • a x86 operating system (tested on bochs-os)
  • round-robbin schedule
  • virtual memory management
  • ext2-like file system
  • unix-like syscall support
  • support 32 bit elf pic

documents: doc.md testcases: test.md

dependencies

  • bochs (emulator)
    • (with bximage to create disk image)
  • gtk2 (gui)
  • nasm (x86 assembler)
  • clang (or gcc)
  • gdb (optional)
  • bochs-gdb (optional)
  • bear (optional)

for archlinux: (bochs can be found in aur or archlinuxcn repo)

sudo yay -S nasm gtk-2 xorg bochs clang
# optional
# sudo yay -S bochs-gdb gdb bear

build

ensure all necessary dependencies installed

To know more about the build, you can make in the follow procedure:

# prepare a master disk image to store bootloaders and kernel
make master-hd60M.img

# prepare another disk image, and partitioning it (in mbr format)
make slave-hd80.img

# build an elf kernel, raw loader binary, and a mbr (512B)
make kernel.elf loader.bin mbr.bin
# load all these binary into the master disk
make boot-master

# load user process into master disk
# the kernel will load them into fs
make userelf

# run the os in bochs
make bochs

Trick: force rebuild

make -B slave-hd80.img
# generate lsp info
bear -- make -B

TODO

  • port to qemu
  • built-in editor
  • shell readline support
  • built-in compiler